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WPF: TreeViewItem bound to an ICommand

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离开以前 2021-02-08 19:24

I am busy creating my first MVVM application in WPF.

Basically the problem I am having is that I have a TreeView (System.Windows.Controls.TreeView) which I have placed

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  • 无人共我
    无人共我 (楼主)
    2021-02-08 19:30

    I improve good solution from Richard via common Tag property:

    MyView.xaml:

    MyView.xaml.cs

        private void TreeView_SelectedItemChanged(object sender, RoutedPropertyChangedEventArgs e)
    {
        var treeView = (TreeView)sender;
        var command = (ICommand)treeView.Tag;
        TreeViewItem selectedItem = (TreeViewItem)treeView.SelectedItem;
        if (selectedItem.Tag != null)
        {
            command.Execute(selectedItem.Tag);
        }
    }



    


    MyViewModel.cs
    


          public RelayCommand selectTreeViewCommand;
      [Bindable(true)]
      public RelayCommand SelectTreeViewCommand => selectTreeViewCommand ?? (selectTreeViewCommand = new RelayCommand(CanSelectTreeViewCommand, ExecuteSelectTreeViewCommand));

      private void ExecuteSelectTreeViewCommand(object obj)
      {
          Console.WriteLine(obj);
      }

      private bool CanSelectTreeViewCommand(object obj)
      {
          return true;
      }

    
    
    
             
    
                                                        
    
            
            
    
              
                
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